Like father, like son! Arnold Schwarzenegger's love child son Joseph Baena stepped out with his mother Mildred after his high school's swim practice in Bakersfield, Calif. on Tuesday, Oct. 1, looking nearly identical to his former bodybuilder father.

Baena, who turned 16 on Wednesday, Oct. 2, wore a black wife beater with a Batman emblem across the front, showing off bulky muscles and a fit build that unmistakably mirrored Schwarzenegger's.

Back in May 2011, the Terminator action star first fessed up to conceiving his love child with Mildred, who was then the family housekeeper in 1996; the stunning confession was a little over a week after he and Maria Shriver announced their separation following 25 years of marriage.

In his tell-all autobiography, Total Recall: My Unbelievably True Life Story, Schwarzenegger admitted that he didn't come clean about his love affair or Joseph until Shriver confronted him during a therapy session.

"The minute we sat down, the therapist turned to me and said, 'Maria wanted to come here today and to ask about a child — whether you fathered a child with your housekeeper Mildred," he wrote, adding that for years, "instead of doing the right thing, I'd just put the truth in a mental compartment and locked it up where I didn't deal with it every day."